PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/13-16:57:50
G02     322.6          79.6              -20.4 +/-    0.82     -20.7 +/-    0.82  0.030 / 0.050
G05     165.7          31.3               11.6 +/-    1.12      19.8 +/-    1.12  0.030 / 0.040
G06     41.0           40.9                7.1 +/-    0.58      10.2 +/-    0.58  0.090 / 0.160
G12     314.4          68.8                7.2 +/-    1.07       7.7 +/-    1.07  0.090 / 0.160
G17     82.7           15.4                7.8 +/-    1.40      19.3 +/-    1.40  0.030 / 0.040
G19     73.9           26.6                8.8 +/-    1.62      16.7 +/-    1.62  0.030 / 0.030
G24     230.5          23.9               10.9 +/-    1.88      21.9 +/-    1.88  0.100 / 0.290
G25     317.2          26.3                7.4 +/-    2.59      13.9 +/-    2.59  0.090 / 0.230